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What is a “callback” in C and how are they implemented?
...ling in a Standard C mode with warnings on. You can also write a minimised test program. Code such as those in libsrtp gives no warnings. I presume, then, that when such a type appears as a function argument, it is required to 'decay' to a pointer-to-function, just like arrays decay to pointers to t...
Export CSS changes from inspector (webkit, firebug, etc)
When I'm working with CSS, I'll often test in a browser - say, Chrome - right click an element, click Inspect Element, and edit the CSS right there. The use of arrow keys to change things like margin and padding makes lining things up super easy.
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pass string parameter in an onclick function
... object.
<!DOCTYPE html>
<html>
<body>
<h1 onclick="test('wow',this)">Click on this text!</h1>
<script>
var test =function(value,object){
object.innerHTML=value;
};
</script>
</body>
</html>
...
How can I know which parts in the code are never used?
...You run the code coverage tool with a good set of varied inputs (your unit-tests or non-regression tests), the dead code is necessarily within the unreached code... and so you can start from here.
If you are extremely interested in the subject, and have the time and inclination to actually work ou...
XML Schema (XSD) validation tool? [closed]
...ts. This is largely due to the complexity of the XSD spec. You may want to test your schema with several tools.
UPDATE: I've expanded on this in a blog post.
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Changing password with Oracle SQL Developer
...ialogs.htm#RPTUG41808
An alternative configuration to have SQL Developer (tested on version 4.0.1) recognize and use the Instant Client on OS X is:
Set path to Instant Client in Preferences -> Database -> Advanced ->
Use Oracle Client
Verify the Instance Client can be loaded succesfully...
Request format is unrecognized for URL unexpectedly ending in
...ou run the service directly from .Net in the debug environment and want to test running the function manually.
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Performance of Find() vs. FirstOrDefault() [duplicate]
...entations which makes sense.
Other than that they are basically the same (testing the passed in predicate to see if an item is what you want)
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Pandas groupby: How to get a union of strings
...d by @voithos below is much faster than the .apply recommended here. In my testing I was getting 5-10x faster.
– Doubledown
Sep 12 '19 at 0:02
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How do I use jQuery's form.serialize but exclude empty fields
...s returning true, !! retypes anything to bool, you can try in console. !!('test'), !!(5), !!(0)
– Aiphee
Mar 9 '16 at 9:31
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